NEWYORK(Reuters)-StocksedgeduponWednesday,withtheDowrisingfortheninthstraightsessiontoanotherrecord,buoyedbysurprisinglystrongretailsalesthatsuggestedtheeconomyisgainingmomentum.TheDowJonesindustrialaverage'snine-daywinningstreakisthelongestconsecutiverunsinceNovember1996.Buttradingvolumewaslight.Moveshavebeenmutedinrecentdaysasinvestorsconsolidatepositionsafterastrongrun-upinthef...